【 ADJUSTABLE BRIGHTNESS】-- Contains 78 pure white LEDs and advanced anti-glare panel to illuminate dark spaces. Rotate the button to adjust the brightness from 150LM (min) to 250LM (max) as you want. 【 EASY TO INSTALL 】-- ① Built in magnet on the back of light, free absorb on any ironwork surface; ② Stick on anywhere as you need with the included 3M magnetic strip. No more wiring. Very easy to install and remove. 【 MOTION & NIGHT SENSOR 】-- With 2 Sensor Modes, it can detect the motion of human in the dark or daytime. Auto-on within 10ft (3m), auto-off after about 20 seconds of no motion detected. Super saving energy!